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Why does adjusting the 3D Viewport's Start Clip setting not effect the 3D Viewport view when in Orthographic mode? The End Clip setting works, but the Start doesn't seem to...is this a bug?

enter image description here

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    $\begingroup$ weird, that looks like a bug $\endgroup$
    – Vader
    Commented Apr 13, 2014 at 16:53
  • $\begingroup$ It does work on perspective but not on orthogonal view $\endgroup$
    – user1853
    Commented Apr 13, 2014 at 17:05
  • $\begingroup$ @cegaton good point. $\endgroup$
    – Vader
    Commented Apr 13, 2014 at 17:34
  • $\begingroup$ related: blender.stackexchange.com/questions/40190/… $\endgroup$
    – user1853
    Commented Oct 18, 2015 at 0:00

1 Answer 1

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The reason is "when perspective is disabled only the far Clip-End is used":

A large clipping range will allow you to see both near and far objects, but reduces the depth precision. To avoid this...

  • increase the near clipping when working on large scenes.
  • decrease the far clipping when objects are not viewed at a distance.

When perspective is disabled only the far Clip-End is used, very high values can still give artifacts.

This is not specific to blender, all OpenGL/DirectX graphics applications have these same limitations.

enter image description here

(Source: Blender Manual via Campbell Barton)

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